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1、BRITISH STANDARD BS EN 60205:2006 Calculation of the effective parameters of magnetic piece parts The European Standard EN 60205:2006 has the status of a British Standard ICS 29.100.10 ? Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN
2、60205:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2006 BSI 2006 ISBN 0 580 49089 0 National foreword This British Standard is the official English language version of EN 60205:2006. It is identical with IEC 60205:2006. It s
3、upersedes BS EN 60205:2001 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee EPL/51, Transformers, inductors, magnetic components and ferrite materials, which has the responsibility to: A list of organizations represented on this committee can be obtain
4、ed on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of
5、 the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid
6、enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This doc
7、ument comprises a front cover, an inside front cover, the EN title page, pages 2 to 28, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: she
8、ffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 60205 NORME EUROPENNE EUROPISCHE NORM July 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektro
9、technische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60205:2006 E ICS 29.100.10 Supersedes EN 60205:2001 English version Calculation of the effective pa
10、rameters of magnetic piece parts (IEC 60205:2006) Calcul des paramtres effectifs des pices ferromagntiques (CEI 60205:2006) Berechnung der effektiven Kernparameter magnetischer Formteile (IEC 60205:2006) This European Standard was approved by CENELEC on 2006-05-01. CENELEC members are bound to compl
11、y with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secr
12、etariat or to any CENELEC member. This European Standard exists in two official versions (English and German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the off
13、icial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania
14、, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of document 51/848/FDIS, future edition 3 of IEC 60205, prepared by IEC TC 51, Magnetic components and
15、 ferrite materials, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60205 on 2006-05-01. This European Standard supersedes EN 60205:2001. This European Standard includes the following significant technical changes with respect to EN 60205:2001: a) unit of angles thro
16、ugh the text are described by using “radian”; b) new words are added in 2.1 “All angles are in radians”; c) replacement, in 3.9, of the equation )( / 21 32 2 2 hhD dgd A l = In by 2/ )( / 21 32 2 2 hhD dgd A l = In ; d) new cores “EL, ER, PQ, EFD and E planar” are added in this edition. The followin
17、g dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2007-02-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-05-01 _ Endorsement notice T
18、he text of the International Standard IEC 60205:2006 was approved by CENELEC as a European Standard without any modification. _ 2 EN 60205:2006 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3 CONTENTS FOREWORD.2 1 Scope.4 2 Basic rules4 3
19、Formulae for the various types of cores.5 3.1 Ring cores.5 3.2 Pair of U-cores of rectangular section 6 3.3 Pair of U-cores of rounded section.6 3.4 Pair of E-cores of rectangular section 8 3.5 Pair of ETD/EER-cores9 3.6 Pair of pot-cores10 3.7 Pair of RM-cores .12 3.8 Pair of EP-cores 15 3.9 Pair o
20、f PM-cores16 3.10 Pair of EL-cores.18 3.11 Pair of ER-cores (low profile) .20 3.12 Pair of PQ-cores22 3.13 Pair of EFD-cores24 3.14 Pair of E planar-cores25 Annex A (informative) Purpose of revision 28 EN 60205:2006 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Unco
21、ntrolled Copy, (c) BSI 4 CALCULATION OF THE EFFECTIVE PARAMETERS OF MAGNETIC PIECE PARTS 1 Scope This International Standard lays down uniform rules for the calculation of the effective parameters of closed circuits of ferromagnetic material. 2 Basic rules The following basic rules are applicable to
22、 this standard. 2.1 All results shall be expressed in units based on the millimetre, shall be accurate to three significant figures, but to derive le , Ae , and Ve the values of C1 and C2 shall be calculated to five significant figures. All angles are in radians. NOTE The purpose of specifying this
23、degree of accuracy is only to ensure that parameters calculated at different establishments are identical and it is not intended to imply that the parameters are capable of being determined to this accuracy. 2.2 Amin is the nominal value of the smallest cross-section. All the dimensions used to calc
24、ulate Amin shall be the mean values between the tolerance limits quoted on the appropriate piece part drawing. 2.3 Calculations are only applicable to the component parts of a closed magnetic circuit. 2.4 All dimensions used for the purpose of calculations shall be the mean value within the toleranc
25、e limits quoted on the appropriate piece part drawing. 2.5 All irregularities in the outline of the core, such as small cut-outs, notches, chamfers, etc. shall be ignored unless otherwise described. 2.6 When the calculation involves the sharp corner of a piece part, then the mean length of flux path
26、 for that corner shall be taken as the mean circular path joining the centres of area of the two adjacent uniform sections, and the cross-sectional area associated with that length shall be taken as the average area of the two adjacent uniform sections. Calculation of effective parameters le , Ae an
27、d Ve. The effective parameters can be defined as 2 2 1e CCl/= 21e CCA/= 2 2 3 1eee CCAlV/= where e l is the effective magnetic length of the core (mm); e A is the effective cross-sectional area (mm2); e V is the effective volume (mm3); 1 C is the core constant (mm1); 2 C is the core constant (mm3).
28、EN 60205:2006 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 5 3 Formulae for the various types of cores 3.1 Ring cores Section X-X d2/2 r0 X X r0 r h h h d1/2 d2/2 d1/2 4 4 IEC 584/06 () 21e 1 ddh C /ln 2 = () () 21 3 2 e 12 2 ddh dd C /ln
29、 /1/14 = 3.1.1 For ring cores of rectangular cross-section with sharp corners hh= e 3.1.2 For ring cores of rectangular cross-section with an appreciable average rounding radius 0 r () 1e khh=1 () 21 2 0 1 ddh r k = 1,7168 3.1.3 For ring cores of trapezoidal cross-section with sharp corners () 2e kh
30、h=1 () 21 2 dd h k + = tantan 3.1.4 For ring cores of trapezoidal cross-section with an appreciable average rounding radius 0 r () 21e kkh=1 3.1.5 For ring cores of cross-section with circular arc frontal sides () = 22 sin 2 sin2 2/sin4 2 21 e dd hh EN 60205:2006 Licensed Copy: sheffieldun sheffield
31、un, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 r dd 4 arcsin2 21 =. NOTE When the winding is uniformly distributed over a ring core, it may be expected that, at all points inside the ring core, the flux lines will be parallel to its surface. No leakage flux will therefore l
32、eave or enter the ring core. This justifies the use of a theoretically more correct derivation of the effective parameters which does not make use of the assumption that the flux is uniformly distributed over the cross-section. 3.2 Pair of U-cores of rectangular section NOTE U + PLT (Plate)-cores us
33、e U core formulas l4 h A2 Area q l2 l5 Section Y-Y Y Y X X l1 l3 l4 l5 l2 p s q A1 Area A3 Area Section X-X IEC 585/06 Length of flux path associated with area 2 A: 222 lll += Mean length of flux paths at corners: ()hplll+= += 4 444 ()hslll+= += 4 555 Mean areas associated with 4 l and 5 l: 2 21 4 A
34、A A + = 2 32 5 AA A + = = = 5 1 1 i i i A l C = = 5 1 22 i i i A l C 3.3 Pair of U-cores of rounded section NOTE U + PLT (Plate)-cores use U core formulas. EN 60205:2006 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 7 l4 h A2 Area l2 l5 Se
35、ction Y-Y Y Y X X l1 l3 l4 l5 l2 p s A1 Area A3 Area Section X-X s IEC 586/06 In calculating A2 ignore any ridges introduced for the purpose of facilitating manufacture. Length of flux path associated with area 2 A: 222 lll += Mean length of flux path at corners: ()hplll+= += 4 444 ()hslll+= += 4 55
36、5 Mean areas associated with 4 l and 5 l: 2 32 5 AA A + = = = 5 1 1 i i i A l C = = 5 1 22 i i i A l C 2 21 4 AA A + = EN 60205:2006 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 8 3.4 Pair of E-cores of rectangular section NOTE E + I (Pla
37、te)-cores use E core formulas. h A2 Area Section Y-Y Y Y X X l1 l4 l5 l2 A1 Area A3 Area Section X-X w l3 A3 Area A1 Area w p d2/2 IEC 587/06 Area of half the centre limb: A3 Mean length of flux paths at corners: ()hpl+= 8 4 +=h d l 28 2 5 Mean areas associated with 4 l and 5 l : 2 21 4 AA A + = 2 3
38、2 5 AA A + = = = 5 1 1 i i i A l C = = 5 1 22 2 i i i A l C EN 60205:2006 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 9 3.5 Pair of ETD/EER-cores h A2 Area Section Y-Y Y Y X X l1 l4 l5 l2 Ac Area A3 Area Section X-X b l3 A3 Area A1 Area
39、b p d3/2 a c d2 S1 A3 Area IEC 588/06 1A is equal to the rectangle cab 2 1 less the cap or segment Ac . 2 2 2 2 2 2 4 1 arcsin 4 1 bdb d b dA = C = 2 2 2 2 2 21 arcsin 4 1 4 1 2 1 d b dbdbabA Mean length of flux path at back walls: 24 1 3 2 2 222 d bddl += NOTE l2 is taken from the mean value of ()
40、32 2 1 dd and()2/ 3 dc . Area of half the centre limb: 333 AAA += The condition to obtain 3 A = 3 A is 31 2980, 0dS = Mean length of flux path at corners: ()hpl+= 8 4 where 22 3 2 d l a p= EN 60205:2006 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy
41、, (c) BSI 10 ()hSl+= 15 2 8 Mean areas associated with l4 and l5: 2 21 4 AA A + = 2 32 5 AA A + = = = 5 1 1 i i i A l C = = 5 1 2 2 2 i i i A l C 3.6 Pair of pot-cores h X l4 Section X-X l3 A1 Area a X A1 Area A2 Area A6 Area A3 Area A3 Area l5 l6 l2 l1 l4 l5 s1 s2 l2 l6 d1/2 d4/2 d3/2 d2/2 b IEC 58
42、9/06 Area of outer ring: 111 AAA += The condition to obtain 11 AA = is () 2 2 2 1 2 1 8 1 2 dd d S+= Area of centre limb: 333 AAA += The condition to obtain 33 AA = is () 2 4 2 3 3 2 8 1 2 dd d S+= EN 60205:2006 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontro
43、lled Copy, (c) BSI 11 Area of ring: ()() 2 2 2 11 4 1 ddnA= 21 2 dd b + =arcsin where b: slot width n: number of slots Core factors associated with l2: 32 2 d a hA l ln 1 = 2 3 3 2 2 2 had da A l 2 = Area of centre limb: () 2 4 2 33 ddA= 4 Mean length of flux paths at corners: ()hSlll+= += 1444 2 4
44、()hSlll+= += 2555 2 4 Areas associated with l4 and l5: ()()hdddnA 2 2 2 2 14 28 1 += ()hdddA 3435 4 8 22 += Core factors associated with l6: ()a d hnA l 2 6 6 ln 1 = () 2 2 2 2 6 6 2 hnad ad A l = = = 6 1 1 i i i A l C = = 6 1 2 2 i i i A l C EN 60205:2006 Licensed Copy: sheffieldun sheffieldun, na,
45、 Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 12 3.7 Pair of RM-cores NOTE 1 This calculation is also applicable to the core type without hole. NOTE 2 RM + I (Plate)-cores use RM core formulas. X l4 Section X-X l3 X A7 l5 l2 l4 l5 l2 d4/2 d3/2 d2/2 l1 h p A8 a lmax e A1/2 c lmin Ty
46、pe 1 RM6S, RM6R Type 2 RM7 X X A7 d4/2 d3/2 d2/2 p A8 a lmax e A1/2 c A3 lmin b Type 3 RM4, RM5, RM8, RM10, RM12, RM14 A7 d4/2 d3/2 d2/2 p A8 a lmax e A1/2 c A3 lmin lmax lmax = lmax + lmax A3 IEC 590/06 EN 60205:2006 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Un
47、controlled Copy, (c) BSI 13 Total area of the outer leg: 2 2 2 1 2 1 24 tan1 2 1 2 pdaA += where 2 arcsin d e = Core factors associated with l2: hD f d d A l 3 2 2 2 ln = where min maxmin 2l ll f + = , 8 7 A A D = 222 lll += () ()2 23 2 2 2 11 hD fdd A l = Type 1: ()()+=cos 2 1 4 1 32 2 3 2 2max ddddl Type 2: () 2 sin2 cos 2 1 4 1 32 2 3 2 2max b ddddl += Type 3: ()cd e l += 2max 2 sin1 2 1 2 Type 1: RM 6-S: += 2 3 22 2 27 42 tan 2 1 tan 2 1 24 1 deedA EN 60205:2006 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 07:33:20 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 14
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